Countermark

https://rpc.ashmus.ox.ac.uk/countermark/483 
GIC 363
bee between ○ (?) and ○, in dotted border (on reverse)
oval 
10 x 7 mm 
A find in the Artemision at Ephesus raises the possibility that the cmk was Ephesian. However, all the current known examples are coins from Colophon 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC III, 2004 Show 2004 1 3
RPC III, 2005 Show 2005 3 3
RPC III, 2006 Show 2006 5 3
RPC III, 2006 Show 2006 4 3
RPC III, 2004 Show 2004 2 3